CN218241456U - Paster structure convenient to laser character prints - Google Patents

Abstract

The utility model discloses a paster structure convenient to laser character prints, including the PPTC base member, the PPTC base member includes at least one PPTC chip, and the upper and lower surface of PPTC chip is equipped with the PPTC copper foil respectively, and the pressfitting has the insulating layer on the PPTC copper foil, is equipped with the electrode layer on the at least one deck insulating layer, and the electrode layer includes the different electrodes of two blocks of areas, PPTC chip and motor layer electric property intercommunication, printing ink solder mask, the printing is on the electrode layer on the printing ink solder mask, and the character, the character passes through laser printing and establishes on the printing ink solder mask. The utility model discloses optimized the structure of PPTC base member, single-deck or bilayer can be chooseed for use to the electrode layer, and two electrode area of electrode layer are different, and wherein an electrode adopts large tracts of land structure, the utility model discloses an overall structure is more convenient for be suitable for the technique of laser printing character, can the laser printing shaping on printing ink solder mask go out required various characters, and the character position of printing is moderate, and the outward appearance is clear, is difficult for blurring, and the colour of electrode can be seen to fashioned character, and whole visual effect is good.

Description

Paster structure convenient to laser character prints

Technical Field

The utility model relates to a technical field of overcurrent protection component, in particular to paster structure convenient to laser character prints.

Background

A Polymer Positive Temperature Coefficient (PPTC) overcurrent protection element (PPTC for short) refers to a characteristic that a resistor reacts sensitively to Temperature change in a certain Temperature range, and when a current or a Temperature rises, a resistance value gradually increases, a loop current decreases, and an overcurrent protection effect is achieved;

in the prior art, the polymer PPTC patch structure product generally adopts the screen printing technology to form characters, and is influenced by screen aging and window breaking, ink viscosity, uneven printing tension and the like in the printing process, the printed characters have bad conditions of broken point defect, uneven size, position deviation, fuzzy character, saw-toothed shape, character height exceeding and the like, and different characters or patterns need to be printed by re-opening the screen, so that the production process is frequently switched by adopting screen printing, and the production efficiency and the benefit are poor due to the fact that the production process is frequently switched and the requirements of customization or small-batch diversification are met

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a paster structure convenient to laser character prints, the character is clear, visual effect is good, realizes laser printing, and convenient and fast satisfies the customer demand.

According to the utility model discloses a paster structure convenient to laser character prints, include:

the PPTC substrate comprises at least one PPTC chip, PPTC copper foils are respectively arranged on the upper surface and the lower surface of the PPTC chip, insulating layers are laminated on the PPTC copper foils, electrode layers are arranged on at least one layer of the insulating layers, the electrode layers comprise two electrodes with different areas, and the PPTC chip is electrically communicated with the electrode layers;

the ink solder mask is printed on the electrode layer;

and the characters are arranged on the ink solder mask layer through laser printing.

Further, preferably, two side surfaces of the PPTC substrate are respectively provided with a conductive groove.

Further, a conductive layer is formed on the side wall of the conductive groove in a copper deposition electroplating mode.

Furthermore, the electrode layer is electrically communicated with the PPTC chip through the conductive groove.

Furthermore, the electrode layer is provided with two layers which are respectively arranged on the two insulating layers.

Furthermore, the electrode layer is provided with a layer which is arranged on one insulating layer, and an ink solder mask layer is directly printed on the other insulating layer.

Furthermore, a conductive blind hole is formed in one of the insulating layers, and the electrode layer is electrically connected with the PPTC chip through the conductive blind hole.

Furthermore, a layer of conductive inner wall is formed on the inner wall of the conductive blind hole in a copper deposition electroplating mode.

Furthermore, the PPTC chip is mainly made of a high-molecular PPTC composite material.

The beneficial effects of the utility model reside in that: the utility model discloses an optimized the structure of PPTC base member, monolayer or bilayer can be chooseed for use to the electrode layer, and two electrode areas of electrode layer are different, and wherein an electrode adopts large tracts of land structure, the utility model discloses an overall structure is more convenient for be suitable for the technique of laser printing character, can print the shaping through laser on printing ink solder mask and go out required various characters, and the character position of printing is moderate, and the outward appearance is clear, is difficult for blurring, and the colour of electrode can be seen to fashioned character, and whole visual effect is good.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Figure 2 is an explosion structure diagram of a PPTC substrate according to a first embodiment of the present invention.

Fig. 3 is a schematic perspective view of a second embodiment of the present invention.

Description of reference numerals: a PPTC substrate 100; a PPTC chip 110; upper PPTC copper foil 120; a lower PPTC copper foil 130; an upper insulating layer 140; a lower insulating layer 150; an upper electrode layer 160; a first electrode 161; a second electrode 162; a lower electrode layer 170; a third electrode 171; a fourth electrode 172; a conductive slot 180; applying an ink solder mask layer 200; an ink-lower solder resist layer 300; character 400.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the positional descriptions, such as the directions or positional relationships indicated above, below, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for the purpose of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

In the description of the present invention, a plurality of meanings are one or more, a plurality of meanings are two or more, and the terms greater than, smaller than, exceeding, etc. are understood as excluding the number, and the terms greater than, lower than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

Example one

Referring to fig. 1-2, the utility model relates to a patch structure convenient to laser character prints, including PPTC base member 100, the upper surface printing of PPTC base member 100 has last printing ink solder mask 200, the lower surface printing of PPTC base member 100 has lower printing ink solder mask 300, there is character 400 on the last printing ink solder mask 200 through the shaping of laser printing technique, this character 400 outward appearance is clear, difficult fuzzy, compare with traditional screen printing technique, need not to prepare many sets of screen printing boards, in character 400 forming process, effectively avoid printing character 400 to have the breakpoint incomplete sink, the size is inhomogeneous, the position skew, fuzzy, the cockscomb structure, bad situations such as character height surpasses take place, to the demand of customer customization or small batch diversification, can improve machining efficiency, increase the income, can see the colour (for the copper) of PPTC base member 100 through this character 400 for the whole visual effect of product is good,

the PPTC substrate 100 includes at least one PPTC chip 110, in this embodiment, a PPTC chip 110 is described, an upper PPTC copper foil 120 is formed on an upper surface of the PPTC chip 110 in a film covering manner, a lower PPTC copper foil 130 is formed on a lower surface of the PPTC chip 110 in a film covering manner, inner-layer circuit processing is performed on the PPTC chip 110, the upper PPTC copper foil 120 and the lower PPTC copper foil 130, an upper insulating layer 140 is laminated on the upper PPTC copper foil 120, a lower insulating layer 150 is laminated on the lower PPTC copper foil 130, the upper insulating layer 140 is provided with an upper electrode layer 160, the lower insulating layer 150 is provided with a lower electrode layer 170, outer-layer circuit processing is performed on the upper electrode layer 160 and the lower electrode layer 170, the upper solder resist layer 200 is provided on the upper electrode layer 160, and the lower solder resist 300 is provided on the lower electrode layer 170.

The upper electrode layer 160 includes a first electrode 161 and a second electrode 162, the area of the first electrode 161 is larger than the area of the second electrode 162, and the large-area first electrode 161 is used as a substrate for subsequent processing of the character 400, i.e., the surface color (copper color) of the first electrode 161 can be seen through the character 400.

The lower electrode layer 170 includes a third electrode 171 and a fourth electrode 172, the area of the third electrode 171 is larger than that of the second electrode 162, and the large-area third electrode 171 is used as a substrate for subsequent processing of the character 400, i.e., the surface color (copper color) of the third electrode 171 can be seen through the character 400

According to the requirement of product design, the characters 400 can be printed by laser on the upper ink solder mask layer 200 or the lower ink solder mask layer 300, or the characters 400 can be printed by laser on the upper ink solder mask layer 200 and the lower ink solder mask layer 300 together.

Furthermore, two side surfaces of the PPTC substrate 100 are respectively provided with a conductive groove 180, and a conductive layer is formed on a side wall of the conductive groove 180 by means of copper deposition and electroplating. The upper electrode layer 160 and the lower electrode layer 170 are respectively electrically connected to the PPTC chip 110 through the conductive groove 180.

Further, the PPTC chip 110 is mainly made of a polymeric PPTC composite material.

Further, the upper insulating layer 140 and the lower insulating layer 150 are mainly made of PP material.

Example two

As shown in fig. 3, the present embodiment is a variation of the first embodiment, and the variation is as follows: the upper electrode layer 160 is disposed on the upper insulating layer 140 or the lower electrode layer 170 is disposed on the lower insulating layer 150, that is, only one electrode layer is disposed, in this embodiment, the upper electrode layer 160 is disposed on the upper insulating layer 140 for illustration, a solder mask layer is directly printed on the lower insulating layer 150, a conductive blind via structure is adopted, at least one conductive blind via is disposed on the upper insulating layer 140, a conductive inner wall is formed on the inner wall of the conductive blind via by means of copper deposition electroplating, and the upper electrode layer is electrically connected to the PPTC chip 110 through the conductive blind via. The single-electrode patch structure can be manufactured by the embodiment, and compared with the embodiment I, the single-electrode patch structure is simpler in structure and higher in production efficiency.

EXAMPLE III

The present embodiment is a variation of the first embodiment and the second embodiment, and the variation is that: two or more PPTC chips 110 are arranged, and each PPTC chip 110 is arranged in a parallel and laminated mode.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (9)

1. The utility model provides a paster structure convenient to laser character prints which characterized in that: the method comprises the following steps:

the PPTC substrate comprises at least one PPTC chip, PPTC copper foils are respectively arranged on the upper surface and the lower surface of the PPTC chip, insulating layers are laminated on the PPTC copper foils, electrode layers are arranged on at least one layer of the insulating layers, each electrode layer comprises two electrodes with different areas, and the PPTC chip is electrically communicated with the electrode layers;

the ink solder mask is printed on the electrode layer;

and the characters are arranged on the ink solder mask layer through laser printing.

2. The patch structure to facilitate laser character printing according to claim 1, wherein: and two side surfaces of the PPTC substrate are respectively provided with a conductive groove.

3. The patch structure to facilitate laser character printing according to claim 2, wherein: and forming a conductive layer on the side wall of the conductive groove in a copper deposition electroplating mode.

4. A patch structure for facilitating laser character printing according to claim 3, wherein: the electrode layer is electrically communicated with the PPTC chip through the conductive groove.

5. The patch structure to facilitate laser character printing according to claim 4, wherein: the electrode layer is provided with two layers which are respectively arranged on the two insulating layers.

6. The patch structure to facilitate laser character printing according to claim 1, wherein: the electrode layer is provided with a layer and is arranged on one insulating layer, and an ink solder mask is directly printed on the other insulating layer.

7. The patch structure to facilitate laser character printing according to claim 6, wherein: and the electrode layer is electrically connected with the PPTC chip through the conductive blind hole.

8. A patch structure for facilitating laser character printing according to claim 7, wherein: the inner wall of the conductive blind hole forms a layer of conductive inner wall in a copper deposition electroplating mode.

9. The patch structure to facilitate laser character printing according to claim 1, wherein: the PPTC chip is mainly made of a high-polymer PPTC composite material.

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